function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broadley, Adam & Kauschke, Ellen & Mohrig, Werner', 2],
    ['Carvalho-Fernandes, Sheila Patrícia', 3],
    ['Dale E. Greenwalt & Daniel J. Bickel & Peter H. Kerr', 4],
    ['Grzegorzek, Adalbert', 22],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 2],
    ['Hardy, D. Elmo', 2],
    ['Holmgren, August Emil', 8],
    ['Menzel, Frank & Gammelmo, Oivind & Olsen, Kjell Magne', 8],
    ['Menzel, Frank & Smith, Jane E. & Chandler, Peter J.', 6],
    ['Mohrig, Werner & Menzel, Frank', 4],
    ['Shaw, Frank R.', 4],
    ['Staeger, Rasmus Carl', 9],
    ['Strobl, Gabriel', 5],
    ['Winnertz, Johannes', 176],
    ['Zetterstedt, Johan Wilhelm', 7],
    ['Other (10)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=274)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);